Machine models

Cat 777 specifications

Entries in this reference
Listing-entry count
3

Short answer

The Cat 777 is a 1,025-horsepower rigid rock truck, and Cat lists 3 versions of it: 777 (07), 777 (07) Water Truck, and 777 (07) Bare Chassis.

777 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Cat	777	3	777 (07), 777 (07) Water Truck, and 777 (07) Bare Chassis

Operating Specifications
Specification	777 (07)
Target Payload (100%)	101.1 ton (US)
Maximum Working Payload (110%)	111.2 ton (US)
Maximum Allowable Payload (120%)*	121.3 ton (US)
Body Capacity - SAE 2:1	83.1 yd³ / 63.5 m³

Specification	777 (07)	777 (07) Water Truck
Top Speed - Loaded	40.9 mph	41.7 mph

Specification	777 (07) Bare Chassis
Nominal Water Tank Capacity	20,000 gal (US)

Engine
Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Engine Model	Cat® C32B	Cat® C32B	Cat® C32B
Bore	5.7 in	5.7 in	5.7 in
Stroke	6.4 in	6.4 in	6.4 in
Displacement	1,959 in³	1,959 in³	1,959 in³

Specification	777 (07)	777 (07) Water Truck
Engine Speed	1800 r/min	1800 r/min
Gross Power - SAE J1995:2014	1,025 hp	1,025 hp
Net Power - SAE J1349:2011	916 hp	916 hp
Cylinders	12	12

Specification	777 (07)
Engine Power - ISO 14396	1,008 hp
Net Torque Rise	Tier 4 Final/Stage V: 36%. Tier 2: 36%

Specification	777 (07) Water Truck
Emissions (1)	Available as US EPA Tier 4 Final/EU Stage V equivalent, Tier 3/Stage IIIA equivalent, or Tier 2/Stage II equivalent emission standards
Emissions (2)	Meets China Nonroad Stage III emission standards equivalent to Tier 3 or Tier 2

Specification	777 (07) Bare Chassis
Gross Power - SAE J1995	1,025 hp
Rated Net Power - SAE J1349	916 hp
Rated Engine Speed	1800 r/min
Number of Cylinders	12

Cab
Specification	777 (07)	777 (07) Water Truck
Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R1234yf. Refer to the machine labeling for identification of the gas. If equipped with R1234yf (Global Warming Potential = 0.501), the system contains 1.85 kg (4.1 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons)	18390 Btu/lb

Specification	777 (07) Water Truck
Heater / Defroster	43930 Btu
ROPS Standards (1)	Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria
FOPS Standards	Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria

Capacity X Body 100% Fill Factor
Specification	777 (07)
Struck	56.3 yd³ / 43.1 m³
Heaped (SAE 2:1)*	83.8 yd³ / 64.1 m³

Capacity Coal Bodies 100% Fill Factor
Specification	777 (07)
SAE 2:1 - For use with material densities of 1160 kg/m3 (1,950 lb/yd3)	116.8 yd³ / 89.3 m³
SAE 2:1 - For use with material densities of 1040-1160 kg/m3 (1,750-1,950 lb/yd3)	139 yd³ / 106 m³
SAE 2:1 - For use with material densities of 950-1040 kg/m3 (1,600-1,750 lb/yd3)	144 yd³ / 110 m³
SAE 2:1 - For use with material densities less than 950 kg/m3 (1,600 lb/yd3)	164.6 yd³ / 125.9 m³

Capacity Dual Slope 100% Fill Factor
Specification	777 (07)
Struck	54.8 yd³ / 41.9 m³
Heaped (SAE 2:1)*	78.6 yd³ / 60.1 m³

Weight Distributions Approximate
Specification	777 (07)	777 (07) Water Truck
Front Axle - Empty	42 %	46 %
Front Axle - Loaded	33 %	33 %
Rear Axle - Empty	58 %	54 %
Rear Axle - Loaded	67 %	67 %

Transmission and speeds
Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Forward - 1	6.8 mph	6.6 mph	6.6 mph
Forward - 2	9.2 mph	9.1 mph	9.1 mph
Forward - 3	12.5 mph	11.9 mph	11.9 mph
Forward - 4	16.9 mph	16.6 mph	16.6 mph
Forward - 5	22.9 mph	22.5 mph	22.5 mph
Forward - 6	30.7 mph	30.2 mph	30.2 mph
Forward - 7	41.7 mph	40.9 mph	40.9 mph
Reverse	7.5 mph	7.5 mph	7.5 mph

Sound
Specification	777 (07)
Sound Standards (1)	The operator Equivalent Sound Pressure Level (Leq) is 73 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed
Sound Standards (2)	The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 83 dB(A)
Sound Standards (3)	Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment

Final Drives
Specification	777 (07)	777 (07) Water Truck
Differential Ratio	2.736:1	2.736:1
Planetary Ratio	7.0:1	7.0:1
Total Reduction Ratio	19.1576:1	19.1576:1

Brakes
Specification	777 (07)
Brake Standards	ISO 3450-2011
Brake Surface Area - Front	6,331 in² / 40846 cm²
Brake Surface Area - Rear	15,828 in² / 102116 cm²

Specification	777 (07) Bare Chassis
Brake Surface - Front	6,331 in² / 40846 cm²
Brake Surface - Rear	15,828 in² / 102116 cm²

Service Refill Capacities
Specification	777 (07)	777 (07) Water Truck
Fuel Tank (1)	300 gal (US)	300 gal (US)
Fuel Tank (2)	350 gal (US)	350 gal (US)
Differentials	59.9 gal (US)	59.9 gal (US)
Final Drive - Each	20 gal (US)	20 gal (US)

Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Cooling System	61 gal (US)	63.4 gal (US)	63.4 gal (US)
Crankcase	28.7 gal (US)	28.7 gal (US)	28.7 gal (US)
Steering System - Including Tank	14.1 gal (US)	14.1 gal (US)	14.1 gal (US)
Brake Hoist System	117 gal (US)	85 gal (US)	85 gal (US)
Torque Converter - Transmission System	36.5 gal (US)	36.5 gal (US)	36.5 gal (US)

Specification	777 (07)
Front wheel (each)	1.98 gal (US)

Specification	777 (07) Bare Chassis
Fuel Tank Capacity	300 gal (US)
Brake/Hoist Hydraulic Tank	117 gal (US)

Body Hoists
Specification	777 (07)
Pump Flow - High Idle	120.9 gpm

Specification	777 (07)	777 (07) Water Truck
Relief Valve Setting - Raise	2,750 psi	2,750 psi
Relief Valve Setting - Lower	500 psi	500 psi
Body Raise Time - High Idle	15 s	15 s
Body Lower Time - Float	13 s	13 s
Body Lower Time - High Idle	13 s	13 s

Suspension
Specification	777 (07)	777 (07) Water Truck
Rear axle - Oscillation	5.4 °	5.4 °
Empty Loaded Cylinder Stroke Front	2.9 in	2.9 in
Empty Loaded Cylinder Stroke Rear	2.5 in	2.5 in

Tires
Specification	777 (07)	777 (07) Water Truck
Standard Tire	27.00R49 (E4)	27.00R49 (E4)

Steering
Specification	777 (07)	777 (07) Water Truck
Turning Diameter - Front	83 ft	83 ft

Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Steering Standards	ISO 5010:2019	ISO 5010:2007	ISO 5010:2007
Steer Angle	30.5 °	30.5 °	30.5 °
Turning Circle - Clearance Diameter	93 ft	93 ft	93 ft

Specification	777 (07) Bare Chassis
Turning Diameter	83 ft

ROPS
Specification	777 (07)
ROPS Standards	Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria
FOPS Standards	Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria

Specification	777 (07) Bare Chassis
Tractor ROPS	133,082 lb

Tank Configurations
Specification	777 (07) Water Truck
Water Tank Capacity	up to 75 700 L (20,000 gal)
Machine Weight (with water tank full)	327,964 - 327,964 lb / 147 172 - 148 762 kg
Empty Machine Operating Weight (without water / with fuel)	160,307 - 162,323 lb / 72 714 - 73 629 kg
Water Tank - Max Empty Weight (no WDS)	42,983 - 44,092 lb / 19 497 - 20 000 kg

Weights Approximate
Specification	777 (07) Water Truck
Target Gross Machine Weight	363,000 lb
Chassis Weight	115,217 lb

Braking System
Specification	777 (07) Water Truck
Brake Surface - Front	6,331 in² / 40846 cm²
Brake Surface - Rear	15,828 in² / 102116 cm²
Brake Standards	ISO 3450:2011

Cat Water Delivery System (WDS)
Specification	777 (07) Water Truck
Maximum water flow	1,800 gal(US)/min
Water per spray head (minimum)	35 gal(US)/min
Water per spray head (maximum)	600 gal(US)/min
Spray head opening range (minimum)	0.04 in
Spray head opening range (maximum)	0.75 in
Maximum size debris flushed through spray head	0.75 in
Spray system hydraulic tank capacity	7.25 gal (US)
Maximum number of rear spray heads	5
Minimum number of rear spray heads (recommended 3)	2
Minimum number of front/side spray heads	2
Maximum number of front/side spray heads	0
Maximum water from cannon (idle)	600 gal(US)/min
Maximum water from cannon (high idle)	1,650 gal(US)/min
Maximum cannon spray distance	200 ft
Type	Wet water pump/hydraulic motor coupling

Weights
Specification	777 (07) Bare Chassis
LRC Bare Chassis Weight without Hoist	111,505 lb
LRC Bare Chassis Weight with Hoist	114,067 lb
LRC Gross Vehicle Weight (Target) without Hoist	363,000 lb
LRC Gross Vehicle Weight (Target) with Hoist	363,000 lb
HRC Bare Chassis Weight without Hoist	112,656 lb
HRC Bare Chassis Weight with Hoist	115,218 lb
HRC Gross Vehicle Weight (Target) without Hoist	363,000 lb
HRC Gross Vehicle Weight (Target) with Hoist	363,000 lb

Variants — Source comparison annotation
Source guide	Differing-field count reported
777	110

Ratios
Figure	777 (07) Bare Chassis
Fuel tank per engine horsepower	0.29 gal

Reference directory classification
Equipment group	rigid rock truck

Cat's listing for the 777 matches a rigid rock truck; see the dump trucks page.

The 777 beside its neighbours
Base version	777F	777	785
Engine power	939 hp	1,025 hp	1,600 hp
Weight	777F: 163,090 lb
Fuel capacity	777F: 300 gal; 785: 410 gal (US)
Wheelbase	777F: 14.96 ft; 785: 17 ft
Rated payload	777F: 200,000 lb

777: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	rigid rock truck	Cat and the 777. That is too few titles to say what owners mostly ask about, so the most recent are listed instead	7

CAT 777c (Heavy Equipment Forums, 2025-10-28)
CAT 777d Tpms Data Configuration Error By VIMS Software (Heavy Equipment Forums, 2024-08-29)
Parking Brake Problem On CAT 777d (Heavy Equipment Forums, 2021-06-03)
CAT 777e Trucks Kdp Serial Prefix (Heavy Equipment Forums, 2016-11-16)

Used market for the 777 — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-25	MachineryTrader	Cat rigid rock truck	119

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
777	119	1985 to 2024	$75,000	$2,164,706	$499,500	7,000

777: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Cat together with the rigid rock truck 777	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Manufacturer	Manufacturer: Cat 777 (07) — Caterpillar Inc.. Observed 2026-09-24.
Manufacturer	Manufacturer: Cat 777 (07) Water Truck — Caterpillar Inc.. Observed 2026-09-24.
Manufacturer	Manufacturer: Cat 777 (07) Bare Chassis — Caterpillar Inc.. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat 777 — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Cat 777 — MachineryTrader. Observed 2026-09-25.
Federal agency data	Federal agency data: Recall database search for Cat — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Recorded observations — Forum-title snapshot
Observation field	Recorded value
Title count	7
Forum indexes	Heavy Equipment Forums
Search wording	the 777 rigid rock truck
Latest title quoted by the reference	CAT 777c

Cat 777: Configuration records

777 (07)

Specification	Source figure
Operating Specifications
Body Capacity - SAE 2:1	83.1 yd³ / 63.5 m³
Target Payload (100%)	101.1 ton (US)
Maximum Working Payload (110%)	111.2 ton (US)
Maximum Allowable Payload (120%)*	121.3 ton (US)
Engine
Displacement	1,959 in³
Engine Model	Cat® C32B
Bore	5.7 in
Stroke	6.4 in
Engine Speed	1800 r/min
Gross Power - SAE J1995:2014	1,025 hp
Net Power - SAE J1349:2011	916 hp
Engine Power - ISO 14396	1,008 hp
Net Torque Rise	Tier 4 Final/Stage V: 36%. Tier 2: 36%
Cylinders	12
Cab
Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R1234yf. Refer to the machine labeling for identification of the gas. If equipped with R1234yf (Global Warming Potential = 0.501), the system contains 1.85 kg (4.1 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons)
Capacity Coal Bodies 100% Fill Factor
SAE 2:1 - For use with material densities of 1160 kg/m3 (1,950 lb/yd3)	116.8 yd³ / 89.3 m³
SAE 2:1 - For use with material densities of 1040-1160 kg/m3 (1,750-1,950 lb/yd3)	139 yd³ / 106 m³
SAE 2:1 - For use with material densities of 950-1040 kg/m3 (1,600-1,750 lb/yd3)	144 yd³ / 110 m³
SAE 2:1 - For use with material densities less than 950 kg/m3 (1,600 lb/yd3)	164.6 yd³ / 125.9 m³
Transmission and speeds
Reverse	7.5 mph
Forward - 1	6.8 mph
Forward - 2	9.2 mph
Forward - 3	12.5 mph
Forward - 4	16.9 mph
Forward - 5	22.9 mph
Forward - 6	30.7 mph
Forward - 7	41.7 mph
Sound
Sound Standards (1)	The operator Equivalent Sound Pressure Level (Leq) is 73 dB(A) when SAE J1166 FEB2008 is used to measure the value for an enclosed cab. This is a work cycle sound exposure level. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed
Sound Standards (2)	The exterior sound pressure level for the standard machine measured at a distance of 15 m (49 ft) according to the test procedures specified in SAE J88:2008, mid‑gear moving operation is 83 dB(A)
Sound Standards (3)	Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment
Final Drives
Planetary Ratio	7.0:1
Differential Ratio	2.736:1
Total Reduction Ratio	19.1576:1
Brakes
Brake Surface Area - Front	6,331 in² / 40846 cm²
Brake Surface Area - Rear	15,828 in² / 102116 cm²
Service Refill Capacities
Cooling System	61 gal (US)
Steering System - Including Tank	14.1 gal (US)
Crankcase	28.7 gal (US)
Fuel Tank (1)	300 gal (US)
Fuel Tank (2)	350 gal (US)
Differentials	59.9 gal (US)
Final Drive - Each	20 gal (US)
Brake Hoist System	117 gal (US)
Front wheel (each)	1.98 gal (US)
Torque Converter - Transmission System	36.5 gal (US)
Body Hoists
Pump Flow - High Idle	120.9 gpm
Relief Valve Setting - Raise	2,750 psi
Body Raise Time - High Idle	15 s
Body Lower Time - Float	13 s
Relief Valve Setting - Lower	500 psi
Body Lower Time - High Idle	13 s
Suspension
Rear axle - Oscillation	5.4 °
Empty Loaded Cylinder Stroke Front	2.9 in
Empty Loaded Cylinder Stroke Rear	2.5 in
Tires
Standard Tire	27.00R49 (E4)
Steering
Steering Standards	ISO 5010:2019
ROPS
ROPS Standards	Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria
Additional specifications
Steer Angle	30.5 °
Turning Diameter - Front	83 ft
Turning Circle - Clearance Diameter	93 ft
Brake Standards	ISO 3450-2011
Top Speed - Loaded	40.9 mph
Front Axle - Empty	42 %
Front Axle - Loaded	33 %
Rear Axle - Empty	58 %
Rear Axle - Loaded	67 %
Struck	54.8 yd³ / 41.9 m³
Heaped (SAE 2:1)*	78.6 yd³ / 60.1 m³
FOPS Standards	Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria

Source

777 (07) Water Truck

Specification	Source figure
Engine
Displacement	1,959 in³
Engine Model	Cat® C32B
Bore	5.7 in
Stroke	6.4 in
Engine Speed	1800 r/min
Gross Power - SAE J1995:2014	1,025 hp
Net Power - SAE J1349:2011	916 hp
Cylinders	12
Emissions (1)	Available as US EPA Tier 4 Final/EU Stage V equivalent, Tier 3/Stage IIIA equivalent, or Tier 2/Stage II equivalent emission standards
Emissions (2)	Meets China Nonroad Stage III emission standards equivalent to Tier 3 or Tier 2
Cab
Air Conditioning	18390 Btu/lb
Heater / Defroster	43930 Btu
ROPS Standards (1)	Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria
Transmission and speeds
Reverse	7.5 mph
Forward - 1	6.6 mph
Forward - 2	9.1 mph
Forward - 3	11.9 mph
Forward - 4	16.6 mph
Forward - 5	22.5 mph
Forward - 6	30.2 mph
Forward - 7	40.9 mph
Final Drives
Planetary Ratio	7.0:1
Differential Ratio	2.736:1
Total Reduction Ratio	19.1576:1
Service Refill Capacities
Cooling System	63.4 gal (US)
Steering System - Including Tank	14.1 gal (US)
Crankcase	28.7 gal (US)
Fuel Tank (1)	300 gal (US)
Fuel Tank (2)	350 gal (US)
Differentials	59.9 gal (US)
Final Drive - Each	20 gal (US)
Brake Hoist System	85 gal (US)
Torque Converter - Transmission System	36.5 gal (US)
Body Hoists
Relief Valve Setting - Raise	2,750 psi
Body Raise Time - High Idle	15 s
Body Lower Time - Float	13 s
Relief Valve Setting - Lower	500 psi
Body Lower Time - High Idle	13 s
Suspension
Rear axle - Oscillation	5.4 °
Empty Loaded Cylinder Stroke Front	2.9 in
Empty Loaded Cylinder Stroke Rear	2.5 in
Tires
Standard Tire	27.00R49 (E4)
Steering
Steering Standards	ISO 5010:2007
Tank Configurations
Water Tank Capacity	up to 75 700 L (20,000 gal)
Machine Weight (with water tank full)	327,964 - 327,964 lb / 147 172 - 148 762 kg
Empty Machine Operating Weight (without water / with fuel)	160,307 - 162,323 lb / 72 714 - 73 629 kg
Water Tank - Max Empty Weight (no WDS)	42,983 - 44,092 lb / 19 497 - 20 000 kg
Weights Approximate
Chassis Weight	115,217 lb
Target Gross Machine Weight	363,000 lb
Cat Water Delivery System (WDS)
Maximum water flow	1,800 gal(US)/min
Water per spray head (minimum)	35 gal(US)/min
Water per spray head (maximum)	600 gal(US)/min
Spray head opening range (minimum)	0.04 in
Spray head opening range (maximum)	0.75 in
Maximum size debris flushed through spray head	0.75 in
Spray system hydraulic tank capacity	7.25 gal (US)
Maximum number of rear spray heads	5
Minimum number of rear spray heads (recommended 3)	2
Minimum number of front/side spray heads	2
Maximum number of front/side spray heads	0
Maximum water from cannon (idle)	600 gal(US)/min
Maximum water from cannon (high idle)	1,650 gal(US)/min
Maximum cannon spray distance	200 ft
Additional specifications
Steer Angle	30.5 °
Turning Diameter - Front	83 ft
Turning Circle - Clearance Diameter	93 ft
Top Speed - Loaded	41.7 mph
Front Axle - Empty	46 %
Front Axle - Loaded	33 %
Rear Axle - Empty	54 %
Rear Axle - Loaded	67 %
Brake Surface - Rear	15,828 in² / 102116 cm²
Brake Surface - Front	6,331 in² / 40846 cm²
Brake Standards	ISO 3450:2011
FOPS Standards	Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria
Type	Wet water pump/hydraulic motor coupling

Source

777 (07) Bare Chassis

Specification	Source figure
Operating Specifications
Nominal Water Tank Capacity	20,000 gal (US)
Engine
Displacement	1,959 in³
Engine Model	Cat® C32B
Bore	5.7 in
Stroke	6.4 in
Gross Power - SAE J1995	1,025 hp
Rated Engine Speed	1800 r/min
Rated Net Power - SAE J1349	916 hp
Number of Cylinders	12
Transmission and speeds
Reverse	7.5 mph
Forward - 1	6.6 mph
Forward - 2	9.1 mph
Forward - 3	11.9 mph
Forward - 4	16.6 mph
Forward - 5	22.5 mph
Forward - 6	30.2 mph
Forward - 7	40.9 mph
Service Refill Capacities
Cooling System	63.4 gal (US)
Steering System - Including Tank	14.1 gal (US)
Crankcase	28.7 gal (US)
Brake/Hoist Hydraulic Tank	117 gal (US)
Brake Hoist System	85 gal (US)
Torque Converter - Transmission System	36.5 gal (US)
Fuel Tank Capacity	300 gal (US)
Steering
Steering Standards	ISO 5010:2007
Turning Diameter	83 ft
ROPS
Tractor ROPS	133,082 lb
Weights
LRC Bare Chassis Weight without Hoist	111,505 lb
LRC Bare Chassis Weight with Hoist	114,067 lb
LRC Gross Vehicle Weight (Target) without Hoist	363,000 lb
LRC Gross Vehicle Weight (Target) with Hoist	363,000 lb
HRC Bare Chassis Weight without Hoist	112,656 lb
HRC Bare Chassis Weight with Hoist	115,218 lb
HRC Gross Vehicle Weight (Target) without Hoist	363,000 lb
HRC Gross Vehicle Weight (Target) with Hoist	363,000 lb
Additional specifications
Steer Angle	30.5 °
Turning Circle - Clearance Diameter	93 ft
Brake Surface - Front	6,331 in² / 40846 cm²
Brake Surface - Rear	15,828 in² / 102116 cm²

Source

Compare Cat 777 (07), 777 (07) Water Truck, 777 (07) Bare Chassis

Engine
Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Engine Model	Cat® C32B	Cat® C32B	Cat® C32B
Bore	5.7 in	5.7 in	5.7 in
Stroke	6.4 in	6.4 in	6.4 in
Displacement	1,959 in³	1,959 in³	1,959 in³

Transmission and speeds
Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Forward - 1	6.8 mph	6.6 mph	6.6 mph
Forward - 2	9.2 mph	9.1 mph	9.1 mph
Forward - 3	12.5 mph	11.9 mph	11.9 mph
Forward - 4	16.9 mph	16.6 mph	16.6 mph
Forward - 5	22.9 mph	22.5 mph	22.5 mph
Forward - 6	30.7 mph	30.2 mph	30.2 mph
Forward - 7	41.7 mph	40.9 mph	40.9 mph
Reverse	7.5 mph	7.5 mph	7.5 mph

Service Refill Capacities
Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Cooling System	61 gal (US)	63.4 gal (US)	63.4 gal (US)
Crankcase	28.7 gal (US)	28.7 gal (US)	28.7 gal (US)
Steering System - Including Tank	14.1 gal (US)	14.1 gal (US)	14.1 gal (US)
Brake Hoist System	117 gal (US)	85 gal (US)	85 gal (US)
Torque Converter - Transmission System	36.5 gal (US)	36.5 gal (US)	36.5 gal (US)

Steering
Specification	777 (07)	777 (07) Water Truck	777 (07) Bare Chassis
Steering Standards	ISO 5010:2019	ISO 5010:2007	ISO 5010:2007
Steer Angle	30.5 °	30.5 °	30.5 °
Turning Circle - Clearance Diameter	93 ft	93 ft	93 ft

More in Cat: 170–771D, 777F, 785C/785D.

Cat 777 specifications

Sources for this page

Cat 777: Configuration records